S-8077A445 10-24 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and chemical exposure
• Enhanced durability and wear resistance from black oxide finish, providing long-lasting performance and reduced maintenance
• Precise component alignment with 1-7/8" shoulder length and tight tolerances, ensuring reliable positioning in assemblies
• High-strength performance with 70,000 psi tensile strength and 35,000 psi shear strength, suitable for demanding mechanical applications
• Secure fastening with minimal play through Class 3A thread fit, delivering vibration resistance and stable connections
• Easy installation and removal with hex socket drive and knurled head, allowing efficient maintenance in confined spaces
• Regulatory compliance assurance meeting ASME B18.3 standards and environmental regulations (RoHS 3, REACH), ensuring quality and safety

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw with black oxide finish addresses critical engineering challenges in industrial settings where corrosion, precision alignment, and mechanical stress are concerns. The UNC coarse thread and Class 3A fit provide secure fastening in high-vibration environments like machinery, automotive assemblies, and conveyor systems. The extended 1-7/8" shoulder length ensures accurate spacing and rotational support for gears, pulleys, and bearings, reducing wear and misalignment. With 70,000 psi tensile strength and corrosion-resistant properties, it offers reliable performance in chemical processing, marine applications, and outdoor equipment, minimizing downtime and maintenance costs while complying with industry standards.

Specification Summary & Compliance

This shoulder screw features precision 10-24 UNC Class 3A threads with coarse spacing, ensuring tight tolerances and reliable engagement. Manufacturing adheres to ASME B18.3 specifications, with shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of -0.005" to 0.005" for consistent fit. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting environmental and safety regulations for industrial use.